Hex
Head Thread Cutting Screw

| TYPES 1 , 23 and 25 Thread
Cutting Screw |
| |
Screw Size |
2 |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
1/4 |
| F |
Accross Flat |
Max |
.125 |
.187 |
.187 |
.187 |
.250 |
.250 |
.312 |
.312 |
.375 |
| Min |
.120 |
.181 |
.181 |
.181 |
.244 |
.244 |
.305 |
.305 |
.367 |
| G |
Across Corners |
Min |
.134 |
.202 |
.202 |
.202 |
.272 |
.272 |
.340 |
.340 |
.409 |
| H |
Head Height |
Max |
.050 |
.055 |
.060 |
.070 |
.093 |
.110 |
.120 |
.155 |
.190 |
| Min |
.040 |
.044 |
.049 |
.058 |
.080 |
.096 |
.105 |
.139 |
.172 |
| S |
Slot Width |
Max |
|
|
.039 |
.043 |
.048 |
.054 |
.060 |
.067 |
.075 |
| Min |
|
|
.031 |
.035 |
.039 |
.045 |
.050 |
.056 |
.064 |
| T |
Slot Depth |
Max |
|
|
.036 |
.042 |
.046 |
.066 |
.072 |
.093 |
.101
|
| Min |
|
|
.025 |
.030 |
.033 |
.052 |
.057 |
.077 |
.083 |
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For explanation of penetration
gaging, refer to NASI 818.6.4-.-1966(R1975)
Appendix IV
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